Thermostat



FIG. 1 is an elevated perspective view of an embodiment of a thermostat, according to our new design;

FIG. 2 is a front view of the embodiment of the thermostat shown in FIG. 1;

FIG. 3 is a top view of the embodiment of the thermostat shown in FIG. 1 (a bottom view of the embodiment of the thermostat of FIG. 1 is omitted as the bottom view is a mirror image of the top view);

FIG. 4 is first side view of the embodiment of the thermostat shown in FIG. 1; and,

FIG. 5 is a second side view of the embodiment of the thermostat shown in FIG. 1.

The portions shown in broken lines comprise environmental structure only and form no part of the claimed design. 

CLAIM The ornamental design for a thermostat, as shown and described. 